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Broader Terms:
   Animalia (animals) 
   Annelida/Echiura/Pogonophora 
   Eutrochozoa 
   Lophotrochozoa 
   Unnamed 

More Specific:
   Branchiobdellae 
   Clitellata (Clitellates) 
   Hirudinea (leeches) 
   Hirudinida 
   Oligochaeta (earthworms) 
   Pogonophora (beard worms) 
   Polychaeta (polychaetes) 
   Unassigned 
   Unassigned annelid 
   annelida worms 
   unclassified 
 
 
Latest Articles on Annelida from uBioRSS


Polychaeta
Guiamarina

External Resources:

Did you mean: Anellidia or annťlides?

Common Names: –Ę–ł–Ņ –ö–ĺ–Ľ—Ć—á–į—ā—č–Ķ —á–Ķ—Ä–≤–ł, ann√ɬ©lides, Anel√ɬ≠deo, sanguessuga, annelids, segmented worms, Kolutińáavci, Anel√≠deo, minhoca, annelid worms, ann√©lides



1.  Integrative anatomical study of the branched annelid Ramisyllis multicaudata (Annelida, Syllidae).LinkIT
Ponz-Segrelles G, Glasby CJ, Helm C, Beckers P, Hammel JU, Ribeiro RP, Aguado MT
Journal of morphology J Morphol Integrative anatomical study of the branched annelid Ramisyllis multicaudata (Annelida, Syllidae). 10.1002/jmor.21356 The sponge-dwelling Syllidae Ramisyllis multicaudata and Syllis ramosa are the only annelid species for which a branched body with one head and multiple posterior ends is known. In these species, the head is located deep within the sponge, and the branches extend through the canal system of their host. The morphology of these creatures has captivated annelid biologists since they were first discovered in the late XIXth century, and their external characteristics have been well documented. However, how their branched bodies fit within their symbiotic host sponges and how branches translate into internal anatomy has not been documented before. These features are crucially relevant for understanding the body of these animals, and therefore, the aim of this study was to investigate these aspects. In order to assess these questions, live observation, as wells as histology, immunohistochemistry, micro-computed tomography, and transmission electron microscopy techniques were used on specimens of R. multicaudata. By using these techniques, we show that the complex body of R. multicaudata specimens extends greatly through the canal system of their host sponges. We demonstrate that iterative external bifurcation of the body is accompanied by the bifurcation of the longitudinal organ systems that are characteristic of annelids. Additionally, we also highlight that the bifurcation process leaves an unmistakable fingerprint in the form of newly-described "muscle bridges." These structures theoretically allow one to distinguish original and derived branches at each bifurcation. Last, we characterize some of the internal anatomical features of the stolons (reproductive units) of R. multicaudata, particularly their nervous system. Here, we provide the first study of the internal anatomy of a branched annelid. This information is not only crucial to deepen our understanding of these animals and their biology, but it will also be key to inform future studies that try to explain how this morphology evolved. ¬© 2021 Wiley Periodicals LLC. Ponz-Segrelles Guillermo G https://orcid.org/0000-0003-3591-9052 Departamento de Biolog√≠a, Facultad de Ciencias, Universidad Aut√≥noma de Madrid, Madrid, Spain. Glasby Christopher J CJ Natural Sciences Department, Museum and Art Gallery of the Northern Territory, Darwin, Northern Territory, Australia. Helm Conrad C Animal Evolution & Biodiversity, Georg-August-Universit√§t G√∂ttingen, G√∂ttingen, Germany. Beckers Patrick P Institute of Evolutionary Biology and Ecology, University of Bonn, Bonn, Germany. Hammel J√∂rg U JU https://orcid.org/0000-0002-6744-6811 Institute of Materials Research, Helmholtz-Zentrum Geesthacht, Geesthacht, Germany. Ribeiro Rannyele P RP Departamento de Biolog√≠a, Facultad de Ciencias, Universidad Aut√≥noma de Madrid, Madrid, Spain. Aguado M Teresa MT Animal Evolution & Biodiversity, Georg-August-Universit√§t G√∂ttingen, G√∂ttingen, Germany. eng Deutsches Elektronen-Synchrotron BES-2016-076419 Secretar√≠a de Estado de Investigaci√≥n, Desarrollo e Innovaci√≥n CGL2015-63593-P Secretar√≠a de Estado de Investigaci√≥n, Desarrollo e Innovaci√≥n Journal Article 2021 04 04 United States J Morphol 0406125 0022-2887 IM 3D reconstruction bifurcation morphology stolon | tree syllid worm 2021 03 26 2021 01 21 2021 03 30 2021 4 5 6 0 2021 4 5 6 0 2021 4 4 21 6 aheadofprint 33813762 10.1002/jmor.21356 REFERENCES, 2021</i></font><br><font color=#008000>http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0<br></font></span><br>2.  <a href=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0 class=title>Screwed up: Spirality of segments and other iterated structures suggest an underlying principle of seriality in bilaterians.</a><a href=http://ubio.org/tools/linkit.php?map%5B%5D=all&link_type=2&url=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0><img src=linkit.png border=0 title='LinkIT' alt='LinkIT'></a> <br><span class=j>Scholtz G<br><font color=gray><i>Journal of morphology J Morphol Screwed up: Spirality of segments and other iterated structures suggest an underlying principle of seriality in bilaterians. 10.1002/jmor.21350 This review deals with helicomery, that is, the specific malformation of a spiral arrangement of segments and other serial structures. Helicomery was first described in annelid and arthropod body segments. However, corresponding patterns occur in arthropod appendages and other bilaterians with serially arranged body parts, such as tapeworms, nematodes, vertebrates, and probably chitons. The specifics of the spirals such as length, orientation, and handedness are described. Most spirals are dorsal and comprise only a few loops. Helicomery is formed by a shift of cells during development or in adults caused by changes in cell adhesion or mechanical impacts such as lesions. A model for the formation of helicomery is proposed, which is based on medieval church labyrinths. These complex spiral structures are derived from concentric lines by the shift of relatively few tiles. This principle of "small causes, great effect" also applies to "spiral segments," because helicomery dissolves segmental patterns and questions the concept of segments as distinct structures. The widespread occurrence of helicomery in nonhomologous serial structures might indirectly indicate an underlying principle of seriality among Bilateria. ¬© 2021 The Author. Journal of Morphology published by Wiley Periodicals LLC. Scholtz Gerhard G https://orcid.org/0000-0002-0112-4537 Humboldt-Universit√§t zu Berlin, Institut f√ľr Biologie/Vergleichende Zoologie, Berlin, Germany. eng Journal Article Review 2021 03 22 United States J Morphol 0406125 0022-2887 IM Annelida Arthropoda Cestoda helicomery limbs 2021 03 17 2021 02 03 2021 03 19 2021 3 23 6 0 2021 3 23 6 0 2021 3 22 12 53 aheadofprint 33749870 10.1002/jmor.21350 REFERENCES, 2021</i></font><br><font color=#008000>http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0<br></font></span><br>3.  <a href=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0 class=title>Cellular and molecular profiles of anterior nervous system regeneration in <i>Diopatra claparedii</i> Grube, 1878 (<b>Annelida</b>, Polychaeta).</a><a href=http://ubio.org/tools/linkit.php?map%5B%5D=all&link_type=2&url=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0><img src=linkit.png border=0 title='LinkIT' alt='LinkIT'></a> <br><span class=j>Ahmad Nazri MUI, Mahmud MH, Saidi B, Mat Isa MN, Ehsak Z, Ross O, Idris I, Ismail WIW<br><font color=gray><i>Heliyon, 2021</i></font><br><font color=#008000>http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0<br></font></span><br>4.  <a href=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0 class=title>New species and records of Orbiniidae (<b>Annelida</b>, Polychaeta) from continental shelf and slope depths of the Western North Atlantic Ocean.</a><a href=http://ubio.org/tools/linkit.php?map%5B%5D=all&link_type=2&url=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0><img src=linkit.png border=0 title='LinkIT' alt='LinkIT'></a> <br><span class=j>Blake JA<br><font color=gray><i>Zootaxa, 2021</i></font><br><font color=#008000>http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0<br></font></span><br>5.  <a href=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0 class=title>Ten new species of Phyllodoce Lamarck, 1818 (Phyllodocidae, <b>Annelida</b>) <br />from Brazil.</a><a href=http://ubio.org/tools/linkit.php?map%5B%5D=all&link_type=2&url=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0><img src=linkit.png border=0 title='LinkIT' alt='LinkIT'></a> <br><span class=j>DE Oliveira VM, Magalh√£es WF, Lana PDC<br><font color=gray><i>Zootaxa, 2021</i></font><br><font color=#008000>http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0<br></font></span><br>6.  <a href=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0 class=title>On the nomenclatural status of some species of Haplotaxidae (Clitellata) from Guinea.</a><a href=http://ubio.org/tools/linkit.php?map%5B%5D=all&link_type=2&url=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0><img src=linkit.png border=0 title='LinkIT' alt='LinkIT'></a> <br><span class=j>Martin P, Omodeo P, Rota E<br><font color=gray><i>Zootaxa, 2021</i></font><br><font color=#008000>http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0<br></font></span><br>7.  <a href=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0 class=title>Laminatubus (Serpulidae, <b>Annelida</b>) from eastern Pacific hydrothermal vents and methane seeps, with description of two new species.</a><a href=http://ubio.org/tools/linkit.php?map%5B%5D=all&link_type=2&url=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0><img src=linkit.png border=0 title='LinkIT' alt='LinkIT'></a> <br><span class=j>Rouse GW, Kupriyanova EK<br><font color=gray><i>Zootaxa, 2021</i></font><br><font color=#008000>http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0<br></font></span><br>8.  <a href=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0 class=title>Two new deep-sea species of Laonice (<b>Annelida</b>: Spionidae) from the Mediterranean Sea.</a><a href=http://ubio.org/tools/linkit.php?map%5B%5D=all&link_type=2&url=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0><img src=linkit.png border=0 title='LinkIT' alt='LinkIT'></a> <br><span class=j>Sikorski AV, Pavlova LV, Sard√° R, Langeneck J, Gil J, Ravara A<br><font color=gray><i>Zootaxa, 2021</i></font><br><font color=#008000>http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0<br></font></span><br>9.  <a href=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0 class=title>Levinsenia species (<b>Annelida</b>: Polychaeta: Paraonidae) from the Sea of Marmara with descriptions of two new species.</a><a href=http://ubio.org/tools/linkit.php?map%5B%5D=all&link_type=2&url=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0><img src=linkit.png border=0 title='LinkIT' alt='LinkIT'></a> <br><span class=j>Erdo?an-Dereli D, √áinar ME<br><font color=gray><i>Zootaxa, 2021</i></font><br><font color=#008000>http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0<br></font></span><br>10.  <a href=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0 class=title>Three new enchytraeid species (Enchytraeidae, <b>Annelida</b>) from mountain soils of Korea and ten species new for the country.</a><a href=http://ubio.org/tools/linkit.php?map%5B%5D=all&link_type=2&url=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0><img src=linkit.png border=0 title='LinkIT' alt='LinkIT'></a> <br><span class=j>Felf√∂ldi T, D√≥zsa-Farkas K, Nagy H, Hong Y<br><font color=gray><i>Zootaxa, 2020</i></font><br><font color=#008000>http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0<br></font></span><br><br><br><table cellspacing=0 cellpadding=0 align=center><tr valign=bottom><td align=center><img src=p.png border=0></td><td align=center><img src=o_red.png border=0></td><td align=center><a href=http://ubio.org/portal/index.php?search=Annelida&category=l&client=pubmed&startPage=2><img src=o_yellow.png border=0></a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Annelida&category=l&client=pubmed&startPage=3><img src=o_yellow.png border=0></a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Annelida&category=l&client=pubmed&startPage=4><img src=o_yellow.png border=0></a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Annelida&category=l&client=pubmed&startPage=5><img src=o_yellow.png border=0></a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Annelida&category=l&client=pubmed&startPage=6><img src=o_yellow.png border=0></a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Annelida&category=l&client=pubmed&startPage=7><img src=o_yellow.png border=0></a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Annelida&category=l&client=pubmed&startPage=8><img src=o_yellow.png border=0></a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Annelida&category=l&client=pubmed&startPage=9><img src=o_yellow.png border=0></a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Annelida&category=l&client=pubmed&startPage=10><img src=o_yellow.png border=0></a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Annelida&category=l&client=pubmed&startPage=2><img src=rtal.png border=0></a></td></tr><td align=center></td><td align=center>1</td><td align=center><a href=http://ubio.org/portal/index.php?search=Annelida&category=l&client=pubmed&startPage=2>2</a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Annelida&category=l&client=pubmed&startPage=3>3</a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Annelida&category=l&client=pubmed&startPage=4>4</a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Annelida&category=l&client=pubmed&startPage=5>5</a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Annelida&category=l&client=pubmed&startPage=6>6</a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Annelida&category=l&client=pubmed&startPage=7>7</a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Annelida&category=l&client=pubmed&startPage=8>8</a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Annelida&category=l&client=pubmed&startPage=9>9</a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Annelida&category=l&client=pubmed&startPage=10>10</a></td><td align=center><a href=http://ubio.org/portal/index.php?search=Annelida&category=l&client=pubmed&startPage=2>¬Ľ</a></td></tr></table></table></tr></table></td><script src="http://www.google-analytics.com/urchin.js" type="text/javascript"> </script> <script type="text/javascript"> _uacct = "UA-634822-1"; urchinTracker(); </script> </BODY> </HTML>